Determination of Moisture Diffusivity using the Time Domain Reflectometry                 (TDR) Method

Pavlík, Zbyšek; Jiřičková, Milena; Černý, Robert; Sobczuk, H.; Suchorab, Zbigniew

doi:10.1177/1744259106064356

Cited by 38 publications

(16 citation statements)

References 7 publications

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“…Duration of the suction experiment was 30, 60, and 90 minutes. For the determination of moisture diffusivity, an inverse analysis of experimentally measured moisture profiles was used [ 19 ].…”

Section: Methodsmentioning

confidence: 99%

Service Life Assessment of Historical Building Envelopes Constructed Using Different Types of Sandstone: A Computational Analysis Based on Experimental Input Data

Kočí

Maděra

Fořt

et al. 2014

The Scientific World Journal

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Service life assessment of three historical building envelopes constructed using different types of sandstone is presented. At first, experimental measurements of material parameters of sandstones are performed to provide the necessary input data for a subsequent computational analysis. In the second step, the moisture and temperature fields across the studied envelopes are calculated for a representative period of time. The computations are performed using dynamic climatic data as the boundary conditions on the exterior side of building envelope. The climatic data for three characteristic localities are experimentally determined by the Czech Hydrometeorological Institute and contain hourly values of temperature, relative humidity, rainfalls, wind velocity and direction, and sun radiation. Using the measured durability properties of the analyzed sandstones and the calculated numbers of freeze/thaw cycles under different climatic conditions, the service life of the investigated building envelopes is assessed. The obtained results show that the climatic conditions can play a very significant role in the service life assessment of historical buildings, even in the conditions of such a small country as the Czech Republic. In addition, the investigations reveal the importance of the material characteristics of sandstones, in particular the hygric properties, on their service life in a structure.

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Section: Methodsmentioning

confidence: 99%

Service Life Assessment of Historical Building Envelopes Constructed Using Different Types of Sandstone: A Computational Analysis Based on Experimental Input Data

Kočí

Maděra

Fořt

et al. 2014

The Scientific World Journal

Self Cite

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“…Cataldo et al embedded linear sensing probes in the wall and found that linear sensors based on time domain reflectometry can be applied to the monitoring of moisture in building structures [17]. Pavlík et al applied the time domain reflectometry technique to the moisture distribution measurement of aerated concrete and determined the water diffusion coefficient of the samples based on the measured moisture content [18].…”

Section: State Of the Artmentioning

confidence: 99%

Exploration Method of Stone Statue Based on Nondestructive Testing Technology-Taking Xinchang Maitreya Statue as an Example

Ge¹,

Liang²,

Wang³

et al. 2019

JESTR

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Non-destructive detection of cultural relics has always been a difficult issue. To effectively detect the degree of weathering in the superficial layer of the Maitreya statue in Xinchang grotto, the microwave humidity nondestructive testing technology was used to detect the humidity of 328 points of the Maitreya statue. For the internal materials of the irregular Maitreya statue, taking moisture detection as the object, the infrared thermography and the microwave humidity method were used to detect the calf parts of the statue respectively, and the weathering degree obtained was basically the same. Results show that the infrared thermography method and the microwave humidity method are suitable for the internal looseness detection of the irregular Maitreya statue and the result has a certain reliability. The conclusions obtained in the study are of the reference value to the similar engineering.

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“…There can be applied so called semi-scale experiments that are usually done at laboratory and fragment of the building structure is exposed to the simulated harmful climatic conditions. Since these experiments maintain their laboratory character, precise laboratory methods for measurement of field variables as moisture [4], relative humidity, temperature, deformation and mechanical stresses can be applied. Also the expenses of performed tests can be kept considerably lower compared to a real test house and in-situ measurement [5].…”

Section: Introductionmentioning

confidence: 99%

An in situ monitoring system for the study of environmental influences on durability and the destructive process of building materials and structures

Pavlík

erný

2013

Computational Methods and Experimental Measurements XVI

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An in situ monitoring system for the study of environmental influences on durability, destructive process and hygrothermal performance of building materials and structures is designed. The experience gained during the laboratory and semi-scale critical experiments is utilized, as for the test probes and data acquisition systems. Taking into account that testing on real structures is done at their common operation conditions, the extent of testing cannot be as wide as in the laboratory conditions. On this account, a lower number of field variables is monitored and the data acquisition systems are simpler than in laboratory and semi-scale conditions. The designed in situ monitoring system is applied for a typical building commonly constructed on the territory of Central Europe and the results of the initial part of the monitoring process are presented.

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Determination of Moisture Diffusivity using the Time Domain Reflectometry (TDR) Method

Cited by 38 publications

References 7 publications

Service Life Assessment of Historical Building Envelopes Constructed Using Different Types of Sandstone: A Computational Analysis Based on Experimental Input Data

Service Life Assessment of Historical Building Envelopes Constructed Using Different Types of Sandstone: A Computational Analysis Based on Experimental Input Data

Exploration Method of Stone Statue Based on Nondestructive Testing Technology-Taking Xinchang Maitreya Statue as an Example

An in situ monitoring system for the study of environmental influences on durability and the destructive process of building materials and structures

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